The FCC on Tuesday approved the Verizon-Alltel buyout, turning Verizon into the largest US wireless carrier with about 83.8 million subscribers, toppling AT&T's 74.8 million subscriber base. MobileCrunch reports that the $28.1 billion deal involves a buyout of $5.9 billion, accompanied with $22.2 billion in assumed debt. Details of the purchase state that Verizon must maintain a four-year roaming
